India, May 15 -- Nancy Guthrie Case Latest News: More than 100 days after Nancy Guthrie vanished from her Tucson area home, the investigation has evolved into one of the most closely watched missing-person cases in the United States. The disappearance of the 84 year old mother of Savannah Guthrie has triggered intense public scrutiny, online theories and national media coverage as the mystery is not only the absence of an arrest, but the unusual handling of forensic evidence, limited disclosures from investigators and the growing silence surrounding Nancy's daughter Annie Guthrie and her husband, Tommaso Cioni.

Nancy Guthrie Case Latest Update: Investigation Enters a Critical Phase

Authorities believe Nancy Guthrie was forcibly taken fr...